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Raise an error if you use Qemu < 2.4 and try to use large number of adapters

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Julien Duponchelle 2017-02-17 09:55:50 +01:00
parent b0567772f7
commit 99f817392d
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GPG Key ID: CE8B29639E07F5E8
2 changed files with 19 additions and 2 deletions
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6
gns3server/compute/qemu/qemu_vm.py
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@ -1454,7 +1454,13 @@ class QemuVM(BaseNode):
network_options.extend(["-device", "i82801b11-bridge,id=dmi_pci_bridge{bridge_id}".format(bridge_id=bridge_id)])
network_options.extend(["-device", "pci-bridge,id=pci-bridge{bridge_id},bus=dmi_pci_bridge{bridge_id},chassis_nr=0x1,addr=0x{bridge_id},shpc=off".format(bridge_id=bridge_id)])
if bridge_id > 1:
qemu_version = yield from self.manager.get_qemu_version(self.qemu_path)
if qemu_version and parse_version(qemu_version) < parse_version("2.4.0"):
raise QemuError("You need to Qemu 2.4 or later in order to support large number of adapters")
pci_device_id = 4 + bridge_id # Bridge consume PCI ports
for adapter_number, adapter in enumerate(self._ethernet_adapters):
mac = int_to_macaddress(macaddress_to_int(self._mac_address) + adapter_number)

15
tests/compute/qemu/test_qemu_vm.py
View File

@ -611,6 +611,9 @@ def test_build_command_large_number_of_adapters(vm, loop, fake_qemu_binary, port
additionnal interfaces
"""
# It's supported only with Qemu 2.4 and later
vm.manager.get_qemu_version = AsyncioMagicMock(return_value="2.4.0")
vm.adapters = 100
vm.mac_address = "00:00:ab:0e:0f:09"
mac_0 = vm._mac_address
@ -626,8 +629,6 @@ def test_build_command_large_number_of_adapters(vm, loop, fake_qemu_binary, port
assert "pci-bridge,id=pci-bridge2,bus=dmi_pci_bridge2,chassis_nr=0x1,addr=0x2,shpc=off" in cmd
assert "i82801b11-bridge,id=dmi_pci_bridge1" in cmd
print(cmd)
mac_29 = int_to_macaddress(macaddress_to_int(vm._mac_address) + 29)
assert "e1000,mac={},bus=pci-bridge1,addr=0x04".format(mac_29) in cmd
mac_30 = int_to_macaddress(macaddress_to_int(vm._mac_address) + 30)
@ -635,8 +636,18 @@ def test_build_command_large_number_of_adapters(vm, loop, fake_qemu_binary, port
mac_74 = int_to_macaddress(macaddress_to_int(vm._mac_address) + 74)
assert "e1000,mac={},bus=pci-bridge2,addr=0x11".format(mac_74) in cmd
# Qemu < 2.4 doesn't support large number of adapters
vm.manager.get_qemu_version = AsyncioMagicMock(return_value="2.0.0")
with pytest.raises(QemuError):
with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
vm.adapters = 5
with asyncio_patch("asyncio.create_subprocess_exec", return_value=MagicMock()) as process:
cmd = loop.run_until_complete(asyncio.async(vm._build_command()))
# Windows accept this kind of mistake
@pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
def test_build_command_with_invalid_options(vm, loop, fake_qemu_binary):